point3d<T> point3d<T>::operator- (const point3d<T>& p) const
{
point3d<T> q;
q.setX(this->x - p.getX());
q.setY(this->y - p.getY());
q.setZ(this->z - p.getZ());
return q;
}
point3d<T> point3d<T>::operator+ (const point3d<T>& p) const
{
point3d<T> q;
q.setX(this->x + p.getX());
q.setY(this->y + p.getY());
q.setZ(this->z + p.getZ());
return q;
}
T point3d<T>::operator* (const point3d<T>& p) const
{
T r = this->x * p.getX() + this->y * p.getY();
return r;
}